Gas-burner.



W. HAWKS.

GAS BURNER. APPLIOATION FILED NOV. 6, 1 913, I 1, 1 1 3,339. Patented Oct. 13, 1914;

THE NORRIS PETERS Ca. FHOTD-LITHQ. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

WILLIAM HAWKS, 0F DULUTH, MINNESOTA, AS SIGNOR TO HUGO MANUFACTURING COMPANY, OF DULUTH, MINNESOTA, ACORPORATION OF MINNESOTA.

GAS-BURNER.

Specification of Letters Patent.

Patented Oct. 13, 1914.

Application filed November 6, 1913. Serial No. 798,524.

To all whom it may concern:

Be it known that I, WILLIAM HAWKS, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of'Minnesota, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification.

The burner provlded by this invention 1s designed, among other purposes, for use 1n clusters in water-heaters and other devices, it is so constructed that its parts may easily be separated without the use of tools for cleaning and otherwise, it includes means for preventing backfire, and the part of the burner that contains portions for emission of gas forcombustion is so arranged that matter falling on the burner will not clog the ports.

When read in connection with the description herein, the details of construction and arrangement of parts contemplated by the invention will be apparent from the accompanying drawing, forming part hereof, wherein an embodiment of the invention is disclosed, for purposes of illustration.

The embodiment disclosed now is considered a preferable one, but it is not the intention to be limited necessarily thereto in interpretation of the claims, as changes within the scope thereof can be made without departing from the nature and spiritof the invention. I

Like reference-characters refer to corresponding parts in the views of the drawing, of which- Figure 1 is an elevation; Fig. 2 is a longitudinal sectional view; Fig. 3 is a top view of the tube without the cap and with the screen shown partly broken away; Fig. 1 is a top view of the cap; and Fig. 5 is a bottom view of the cap.

Having more particular reference to the drawings, 6 designates a burner-tube. This tube is enlarged in its lower portion, as shown at 7, and at the lower end there is a thimble 8 arranged for connection with the nipple or other part of a gas-supply pipe, there being air-passages 9 between the thimble and the wall of the tube. The tube is formed at its upper portion with an en larged substantially disk-shaped flaring annular part 10 open at the top. A screen 11, of perforated sheet material, wire netting, or the like, to prevent back fire from the burner-ports, is positioned in and extends over the area of the flaring portion 10,.and the screen is formed with a depending flange -12, which, when restin on the bottom of the flaring portion, WillfilOld the screen in substantially the same plane as the top edgeof that portion. The screen is maintained in place by gravity or by slight binding of its flange against the side of the flarin-gportion, and, therefore, it may easily be removed with the fingers or by inverting theburncru v 1 An annular burner-cap 13, the parts of which preferably are integrally formed, is

seated on the flaring portion of the tube.

This cap includes a flat plate or diaphragm portion 14;, fromwhich depends a flange or rim 15 arranged to surround and loosely contact with the side of the flaring portion. Within the flange and slightly below the diaphragm there is an annular ring or abutment 16 of substantially the same diameter as and arranged to rest on, the topedge of the flaring portion of the tube and to maintain the diaphragm slightly above that edge, so that there is a space between the screen and the diaphragm. Ports 17 are formed in the diaphragm inside of, and adjacent to, the abutment 16 in a regularly-spaced annular series, and these ports lead upwardly through the diaphragm in an outwardlydeflected direction. The burner-cap also has extending upwardly and outwardly from the peripheral portion of its diaphragm a flaring rim 18, in the outer surface of which are upwardly-extending grooves 19 into which the ports 17 lead. The grooves extend nearly to the top edge of the rim. The inner periphery and top edge of the rim 18 are rounded or fluted regularly, whereby there are provided somewhat enlarged or thicker portions 20, in which the grooves 19 are accommodated, and between which are notches 21.

In use gas enters the tube through the thimble 8, within the tube it is mixed with air induced thereinto through the passages 9, it flows through the screenll and thereby is distributed within the space between the screen and diaphragm to the ports 17 leading to the grooves 19 in'the flaring rim 18, and the gas is burnt around the rim. The flaring rim operates to spread the flame of combustion outwardly therefrom in a manner conducive to efficiency. Any solid matter or condensed fluid that may fall on the burner-cap will be prevented from entering the grooves 19 and ports 17 by the flaring rim 18, whereby the liability of the burner becoming choked is obviated. Any matter that may accumulate on the cap inside of the rim may easily be eliminated by removing and inverting the cap.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A burner comprising a tube having at its upper end an enlarged substantiallydisk-shaped flaring annular portion, a screen within said enlarged portion, and an annular burner-cap including a diaphragm, a flange depending from the diaphragm and arranged to surround and loosely contact the side of the upper portion of the tube, an annular abutment within the flange arranged to seat on the top edge of the tube and to maintain the diaphragm above the plane of that edge, there being ports formed in the diaphragm inside of and adjacent to the abutment in a regularly-spaced annular series and leading upwardly through the diaphragm in an outwardly-deflected direction, and a flaring rim extending upwardly and outwardly from the diaphragm and having on its outer side grooves into which said ports lead.

2. A burner comprising a tube having at its upper end an enlarged annular portion, a screen within said enlarged portion, and an annular burner-ca including a diaphragm, a flange on the diaphragm arranged to engage said enlarged annular portion, an annular abutment on the cap arranged to seat on the top edge of said enlarged portion and to maintain the diaphragm above the plane of that edge, there being ports leading upwardly through the diaphragm, and a rim extending upwardly from the diaphragm and having on its outer side grooves into which said ports lead.

WILLIAM HAWKS. Witnesses E. SEGERMAN, HARRY COMFORT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

